[Framework] Add spec for ImplementationLoader

WTD-518.

platform/framework/test/resolve/ImplementationLoaderSpec.js

@@ -1,14 +1,81 @@
-/*global define,Promise,describe,it,expect,beforeEach*/
+/*global define,Promise,describe,it,expect,beforeEach,waitsFor,runs*/
 
 /**
  * ImplementationLoaderSpec. Created by vwoeltje on 11/6/14.
  */
 define(
-    [],
+    ["../../src/resolve/ImplementationLoader"],
-    function () {
+    function (ImplementationLoader) {
         "use strict";
 
-        describe("", function () {
+        describe("The implementation loader", function () {
+            var required,
+                loader;
+
+            function mockRequire(names, fulfill, reject) {
+                required = {
+                    names: names,
+                    fulfill: fulfill,
+                    reject: reject
+                };
+            }
+
+            beforeEach(function () {
+                required = undefined;
+                loader = new ImplementationLoader(mockRequire);
+            });
+
+            it("passes script names to require", function () {
+                loader.load("xyz.js");
+                expect(required.names).toEqual(["xyz.js"]);
+            });
+
+            it("wraps require results in a Promise that can resolve", function () {
+                var result;
+
+                // Load and get the result
+                loader.load("xyz.js").then(function (v) { result = v; });
+
+                expect(result).toBeUndefined();
+
+                required.fulfill("test result");
+
+                waitsFor(
+                    function () { return result !== undefined; },
+                    "promise resolution",
+                    250
+                );
+
+                runs(function () {
+                    expect(result).toEqual("test result");
+                });
+            });
+
+            it("wraps require results in a Promise that can reject", function () {
+                var result,
+                    rejection;
+
+                // Load and get the result
+                loader.load("xyz.js").then(
+                    function (v) { result = v; },
+                    function (v) { rejection = v; }
+                );
+
+                expect(result).toBeUndefined();
+
+                required.reject("test result");
+
+                waitsFor(
+                    function () { return rejection !== undefined; },
+                    "promise resolution",
+                    250
+                );
+
+                runs(function () {
+                    expect(result).toBeUndefined();
+                    expect(rejection).toEqual("test result");
+                });
+            });
 
         });
     }